of
WM

William Maher, MD

Dr. Maher is a gastroenterologist in the Somersworth area. He is affiliated with Portsmouth Regional Hospital and 4 more hospitals.
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Conditions treated

Tap to see related services for each condition and more details about our calculations.

Top 25%
34k doctors
Top 15%
34k doctors
Top 5%
17k doctors
Dr. Maher saw more digestive tract conditions patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
40k doctors
Top 15%
40k doctors
Top 5%
20k doctors
Dr. Maher saw more pain patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
22k doctors
Top 15%
22k doctors
Top 5%
11k doctors
Dr. Maher saw more acid reflux patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
6.7k doctors
Top 15%
6.7k doctors
Top 5%
3.4k doctors
Dr. Maher saw more benign polyps patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
4.4k doctors
Top 15%
4.4k doctors
Top 5%
2.2k doctors
Dr. Maher saw more diverticulosis patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
36k doctors
Top 15%
36k doctors
Top 5%
18k doctors
Dr. Maher saw more vascular disease patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
3.7k doctors
Top 15%
3.7k doctors
Top 5%
1.9k doctors
Dr. Maher saw more colon polyps patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
38k doctors
Top 15%
38k doctors
Top 5%
19k doctors
Dr. Maher saw cardiovascular disease (CVD) patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

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Top 25%
14k doctors
Top 15%
14k doctors
Top 5%
7.0k doctors
Dr. Maher saw more diarrhea patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
4.1k doctors
Top 15%
4.1k doctors
Top 5%
2.1k doctors
Dr. Maher saw more gas patients than 95% of similar doctors nationwide in 2014–2019. Learn more.
Top 25%
4.9k doctors
Top 15%
4.9k doctors
Top 5%
2.5k doctors
Dr. Maher saw more irritable bowel syndrome (IBS) patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
5.1k doctors
Top 15%
5.1k doctors
Top 5%
2.5k doctors
Dr. Maher saw lung cancer patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
26k doctors
Top 15%
26k doctors
Top 5%
13k doctors
Dr. Maher saw more anemia patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
2.9k doctors
Top 15%
2.9k doctors
Top 5%
1.4k doctors
Dr. Maher saw head and neck cancers patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
25k doctors
Top 15%
25k doctors
Top 5%
12k doctors
Dr. Maher saw obesity patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

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Top 25%
13k doctors
Top 15%
13k doctors
Top 5%
6.6k doctors
Dr. Maher saw more inflammatory bowel disease (IBD) patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
17k doctors
Top 15%
17k doctors
Top 5%
8.5k doctors
Dr. Maher saw more liver condition patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
15k doctors
Top 15%
15k doctors
Top 5%
7.7k doctors
Dr. Maher saw more hemorrhage patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
10k doctors
Top 15%
10k doctors
Top 5%
5.0k doctors
Dr. Maher saw more biliary tract disease patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
15k doctors
Top 15%
15k doctors
Top 5%
7.7k doctors
Dr. Maher saw more constipation patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
5.0k doctors
Top 15%
5.0k doctors
Top 5%
2.5k doctors
Dr. Maher saw more ulcerative colitis (UC) patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
275 doctors
Top 15%
275 doctors
Top 5%
137 doctors
Dr. Maher saw alcoholic hepatitis patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
318 doctors
Top 15%
318 doctors
Top 5%
159 doctors
Dr. Maher saw cholangitis patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
20k doctors
Top 15%
20k doctors
Top 5%
10k doctors
Dr. Maher saw more peripheral vascular disease (PVD) patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
7.7k doctors
Top 15%
7.7k doctors
Top 5%
3.9k doctors
Dr. Maher saw more hepatitis patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
2.8k doctors
Top 15%
2.8k doctors
Top 5%
1.4k doctors
Dr. Maher saw more Crohn's disease patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
3.8k doctors
Top 15%
3.8k doctors
Top 5%
1.9k doctors
Dr. Maher saw alcoholism patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
4.8k doctors
Top 15%
4.8k doctors
Top 5%
2.4k doctors
Dr. Maher saw more hepatitis C patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
692 doctors
Top 15%
692 doctors
Top 5%
345 doctors
Dr. Maher saw more celiac disease patients than 75% of similar doctors nationwide in 2014–2019. Learn more.
Top 25%
6.0k doctors
Top 15%
6.0k doctors
Top 5%
3.0k doctors
Dr. Maher saw stomach flu patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Locations

Dr. Maher sees patients and can be reached at the following locations.

Office
21 Clark Way
Somersworth, NH 03878
187 miles away
Office
330 Borthwick Ave
Portsmouth, NH 03801
181 miles away

Reviews

Credentials
  • UMDNJ - University of Medicine & Dentistry of NJ
    MEDICAL EDUCATION, 1992

Specializations

    1. Allopathic & Osteopathic Physicians
    2. Internal Medicine
    3. Gastroenterology
    1. Allopathic & Osteopathic Physicians
    2. Internal Medicine

Hospital affiliations

Dr. Maher is able to admit and treat patients at the following hospitals.

  • Portsmouth Regional Hospital
    A
    Hospital safety grade (Spring 2019)
  • Wentworth-Douglass Hospital
    A
    Hospital safety grade (Spring 2019)
  • York Hospital
    A
    Hospital safety grade (Spring 2019)
  • Frisbie Memorial Hospital
    C
    Hospital safety grade (Spring 2019)
  • Huggins Hospital
    Hospital safety grade not available

Insurance accepted

Always check coverage with your doctor’s office.

  • Aetna
  • Anthem
  • Arkansas Blue Cross and Blue Shield
  • Assurant Health
  • Beacon Health Strategies
  • Blue Cross Blue Shield of Arizona
  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross Blue Shield of Michigan
  • Blue Cross and Blue Shield of Alabama
  • Blue Cross and Blue Shield of Florida
  • Blue Cross and Blue Shield of Illinois
  • Blue Cross and Blue Shield of Kansas
  • Blue Cross and Blue Shield of Kansas City
  • Blue Cross and Blue Shield of Louisiana
  • Blue Cross and Blue Shield of Minnesota
  • Blue Cross and Blue Shield of Mississippi
  • Blue Cross and Blue Shield of Montana
  • Blue Cross and Blue Shield of Nebraska
  • Blue Cross and Blue Shield of New Mexico
  • Blue Cross and Blue Shield of North Dakota
  • Blue Cross and Blue Shield of Oklahoma
  • Blue Cross and Blue Shield of Rhode Island
  • Blue Cross and Blue Shield of Texas
  • Blue Cross and Blue Shield of Vermont
  • Blue Cross and Blue Shield of Wyoming
  • Blue Cross of Idaho
  • Blue Shield of California
  • BlueCross BlueShield of South Carolina
  • BlueCross BlueShield of Tennessee
  • CareFirst BlueCross BlueShield
  • Cigna
  • Community Health Options
  • CoreSource
  • Coventry Health Care
  • Cross and Blue Shield of North Carolina
  • Fallon Health
  • Geisinger Health Plan
  • Harvard Pilgrim Health Care
  • Health New England
  • HealthNow New York
  • HealthPartners
  • HealthSmart
  • Highmark Blue Cross Blue Shield
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana
  • Independence Blue Cross AmeriHealth
  • MVP Health Care
  • MagnaCare
  • Mayo Clinic Health Solutions
  • MedCost
  • Medical Mutual of Ohio
  • Medicare
  • Meritain Health
  • Neighborhood Health Plan
  • Pomco
  • Premera Blue Cross
  • Priority Health
  • Regence Blue Cross Blue Shield
  • TRICARE
  • Tufts Health Plan
  • UPMC Health Plan
  • United Healthcare
  • ValueOptions
  • Wellmark Blue Cross and Blue Shield